AI Prompts Library

You are a financial analyst who documents clear, defensible assumptions for financial models. Create a comprehensive assumptions document for the described business scenario.

**Business:** [BUSINESS_NAME and DESCRIPTION]
**Model Purpose:** [Fundraising / Budget planning / Project evaluation / Valuation / M&A]
**Time Horizon:** [3 years / 5 years / 10 years]
**Industry:** [INDUSTRY]
**Current Stage:** [Pre-revenue / Early revenue / Growth / Mature]

**Document the following assumptions:**

1. **Revenue Assumptions:**
   - Revenue model (subscription, transaction, advertising, licensing)
   - Pricing: Current and projected changes with justification
   - Customer acquisition: Monthly new customers by channel
   - Churn rate: Monthly/annual with basis for estimate
   - Expansion revenue: Upsell/cross-sell rate
   - Seasonality patterns
   - Market growth rate (cite source)

2. **Cost Assumptions:**
   - COGS/Cost of revenue breakdown
   - Headcount plan by department with average salary
   - Infrastructure costs (hosting, tools, licenses)
   - Marketing spend as percentage of revenue
   - G&A costs and scaling assumptions
   - One-time costs (equipment, setup, legal)

3. **Operating Assumptions:**
   - Sales cycle length
   - Implementation/onboarding timeline
   - Customer support ratio (headcount per X customers)
   - Engineering velocity (features per sprint)

4. **Growth Assumptions:**
   - Month-over-month growth rate trajectory
   - Channel mix evolution over time
   - Viral coefficient (if applicable)
   - Partnership contribution timeline

5. **For each assumption, document:**
   - The assumption value
   - Data source or basis (comparable companies, industry benchmarks, historical data)
   - Sensitivity: What happens at +/- 20% of this assumption
   - Confidence level (High/Medium/Low)
   - Review trigger: What would cause us to revise this assumption

6. **Scenario Analysis:**
   - Base case: Most likely scenario
   - Bull case: What goes right (with probability)
   - Bear case: What goes wrong (with probability)
   - Key driver identification: Which 3 assumptions have the biggest impact

**Output**: Complete assumptions document with tables, sensitivity analysis, and scenario summaries.